No problem, we've got 1624 and 3503 to multiply
1624 × 3503 = 3503 × (1624)
+ 3503 × 4 that is equal 14012
+ 3503 × 20 that is equal 70060
+ 3503 × 600 yielding 2101800
+ 3503 × 1000 resulting in 3503000

= 5688872
